Patents by Inventor David Rozenvasser

David Rozenvasser has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Publication number: 20080196382
    Abstract: A method and apparatus for reducing the amount of metal used in a chain as compared to a chain formed of a round wire, the method including the steps of forming a wire having a non-round shape, wrapping the wire around a mandrel to form a spiral of the wire, the mandrel formed such that it supports the non-round shape of the wire with a longer dimension of the wire extending radially from an axis of the mandrel, cutting the spiral of wire to form individual links of wire, and forming a chain from said links.
    Type: Application
    Filed: February 19, 2008
    Publication date: August 21, 2008
    Inventor: David ROZENVASSER
  • Patent number: 7340878
    Abstract: A method of forming a jewelry product includes forming an initial partially formed chain having a plurality of portions which are displaceable relative to one another, and a strand of wire that retains the portions together but does not limit their displacement. The initial partially formed chain is further wound around a mandrel and heated. During heating, the portions of the initial partially formed chain are being set into the shape of the mandrel while wire portions are prevented from displacing relative to one another. This final shaped spiral is then cut into individual links which are then formed into the jewelry product.
    Type: Grant
    Filed: April 14, 2006
    Date of Patent: March 11, 2008
    Assignee: Avraham Rozenvasser
    Inventors: David Rozenvasser, Avraham Rozenvasser
  • Publication number: 20070277498
    Abstract: A chain including a plurality of cages connected together, each cage including at least two arms having at least one feature which distinguishes one or more of the at least two arms from a remainder of the arms, said at least arms being bent in a direction away from a base point.
    Type: Application
    Filed: May 31, 2007
    Publication date: December 6, 2007
    Inventor: David ROZENVASSER